Grape Jelly Purple Amethyst Cluster on StandDark Purple Amethyst Cluster (Grape Jelly Amethyst) with Large Amethyst Crystal Points An Amethyst Cluster bringing dark and deep Purple Crystal Amethyst tones, this Amethyst grows on a vertical formation and brings the best quality any amethyst can have, ready to become the statement amethyst at your collection. With Large, lustrous crystal amethyst druzy, the points of this amethyst are all intact and very clean, the purple seen here is called Grape